Intrusive Granite Extrusive Equivalent

Scoria is a dark colored extrusive volcanic rock with abundant large vesicles.

Intrusive granite extrusive equivalent.

Intrusive igneous rocks crystallize below earth s surface and the slow cooling that occurs there allows large crystals to form. For example a magma that would form rhyolite if it vented at the surface would crystallize into a granite in a subterranean chamber kilometers below the surface. Rhyolite is the extrusive equivalent in chemistry and density of granite. What rock has the same composition as granite.

Granite is an intrusive felsic silicic plutonic rock. The high silica and low iron and magnesium contents result in crystallization of mostly non ferromagnesium silicate minerals k feldspar na plagioclase and quartz. Granite is classified as a felsic rock high in silica content. Some cool so quickly that they form an amorphous glass.

It commonly forms as a bubble rich upper surface on many basalt and andesite lavas. Very light and will float on water. Granites are light colored with coarse grains. Granite the equivalent of its extrusive volcanic rock type rhyolite is a very common type of intrusive igneous rock.

Diorite is an intermediate rock equivalent to andesite. Its principal minerals are feldspars quartz and mica. A felsic coarse grained intrusive igneous rock composed of quartz orthoclase feldspar sodium rich plagioclase feldspar and micas. Intrusive equivalent of rhyolite.

It is the intrusive equivalent of the extrusive rhyolite. The central cores of major mountain ranges consist of intrusive igneous rocks usually granite. Gabbro is a mafic rock and has the same chemistry and mineralogy as basalt. Examples of intrusive igneous rocks are diabase diorite gabbro granite pegmatite and peridotite.

It contains more than 68 weight of silica in composition and is granular and coarse grained in texture. Intrusive rocks are classified the same way extrusive rocks are according to the relative amounts of feldspars quartz and ferromagnesian minerals. No granite is the most common intrusive igneous rock. Extrusive igneous rocks erupt onto the surface where they cool quickly to form small crystals.

And granite is a felsic rock equivalent to rhyolite.